Improved stone-drilling machine



Levi HneMANoE,-OF 'HUD-sow, N-EwfYoR-K,"

Letters Patent No. 76,189, dated .Marek 31, 1868.

IMPROVED STONE-DRILLING MACHINE'.

site tthiilt referat tu in tiges: tttets nttiit mit mating gattinitlgrsame. v

TO ALL WHOM 11F-MAY CONCERN:

Bei-t known that I, LEVI HERMANGE, of Hudson, in Lhe county of Columbia,and in the State of New vYork, have invented new and useful Improvementsin StoneDrilling Machines; and do hereby declare that thefollcwing is afull, clear, and exact description thereof, reference being had totheaccompanying'drawings, andto the letters of reference marked thereon.

In the annexed drawings, making 'part of this specification, A and Brepresnnttwoframes, which consist lof sills placed parallel to eachother, and suitably framed together. l The frame'B acts as afoundationfor frame A, and for the machine, and is intended to lie upon the groundor oor,or wherever-the machine may beplaced. This frame-B is provided on'two sides with the `metallic plates C-C. Each of these plates isprovided with a circular or curved slot, D,'and at 'stated'vintervalsin4 this curveare formed the'recesses e e. l Trunnion-bcarings 'are alsoformed in the upper, edges of these plates. Projecting from the sidesofthe'frame A, at a vshort distance from its lower end, are the trunnionsa,.\vhich rest in the bearings in the plates G- C. Bolts ww pass throughthe sills of the V frame A, at their lower ends, and then through theslots inthe plates C C, resting in oneioi` the recesses e e. The frame'Amay by these means be set at any desirable angle to frame B bysmplyremoving bolts tv, then. trning the frameA to Vthe desired angle. andagain replacing the bolts to 'secure it in the desired position. i

H represents a-s-haft, which lies crosswise of-trame A, and having itsbearings in the sills of .said frame. This shaft is provided at each endwith the crank-handles I I, and near its centre with the tvobalance-wheels E E. These wheels have 'three or more pins secured intheir inner faces, and equidistant apart, and upon these pins are'placedthe small grooved wheels s s, thepurpose of which will be hereinafterdescribed. Y

F represents the drill-shaft, which may be of any convenient length andsize. This shaft has a screwthrcad out upon it, above its centre, andpasses through a long sleeve, J, which has also a screw-thread eut vinit to correspond with the threadon the shaft. This sleeve has lon-g`groove in' one side of it. represents a haud-wheel, which-surrounds thesleeve J, and has passing through it a pin, "a, whchenters the groove inthe sleeve, andstations it with said sleeve. This hand-wheel is placedbetweenithe two cross-pieees G and G of the frame A, and when it isturned in'one directioncauses the sleeved,l by means of its thread, tolower the shaft F.. The shaft is raised of course by reversing themoti-on of this hand-wheel. Depending fromithe under side of thecross-piece G'are two slotted guide-supports u..

T T represent two metallic bars, one end of each of which is'connectedto one of the plates @t by means of a pin, which passes through 'theslot in'said plate. The other ends of these bars are pivoted to thelower' end of the sleeve J in any suitable manner. Thebars TAT are sosituated with reference to the groovedwheels' upon the balance-wheels E,that when the balance-wheels revolve, the groovcdwhecls as catch undersaid bars, and elevating them a. certain distance, suddenly pass fromunder them, These bars bein-g connected to the sleeve, and thedrill-shaft moving with said sleeve, of course. the drillshaft Yrisesand-falls at cach rise andfall of thebars T T, thus giving three orvmore strokes to the drill at each revolution of the wheels E. A rotary'motion is given to the drill during its work by means of a pawl, whichcatches into the teethof a ratchet-wheel upon the drill-shaft, near itsupper-end. d

P represents the ratchet-wheel, and M a bar, which has connected toit aspring-pawl, R. When this bar moves in one direction, the pawl'catohesin the teeth ofthe wheel Prandlgives, it a partial rotation. The bar"'lies crcsswise of thc frame-A, and has motion given to it by means of aspearshaped arm, N. This arm N is` connected to a. cross-head, a', andthis cross-head isconnected to the upper end of sleeve J. Whenvthe'sleeve and drill rise, the urm N strikes against a lng or projection onthe vbar M, and gives it an endwise movement, and when the arm descends,a spring, o, forces the bar back to its original position, so that itspawl will take fresh hold on the teeth ofwheel P.` Thus it will be seenthat, while the drill-shaft is being given an endwise movement, it isalso given a rotary movement. p

I am aware' thatthesemovements have been given to the drill-shaftbefore, but not bythe devcesvherein before described. A spring, L,surrounds the drill-shaft for forcing it downward after it has `beenelevated by the bars T T. g represents a-gauge-plate, which is.provid-ed with a long slot, through which passes a screw-to cantine-itto one of thc sills of 'thei frame A.. ,Thisgauge can, by means of theslot and screw, be extended so a's always to readily indicate the depthof hole which the drill has made. Inches and fractional parte thereofzufemarked upon the face of the gage. The lower end of the drill-shaft.Works between two grooved Wheels o '11,'. which act as guides und'brncesfor it', always keeping it in proper position.

Having thus fully described -my invention, what I claim es new, anddesire to secure by Letters Patonis- Il. The, arrangement of the slottedplates 'il-1u, connecting-bars T T, and sleeve J, incombinntion withth'e wheels E E; having groovfed pulleys s a on their inner faces,thewholearnged and opeating substantially as specified. i 4 I 2. Thecombination'of the frame A and itsbolts zo w with the platesC C, havingtrunnon-berings, cnrved 4slots D and recesses e-e e, whereby-the frame Amay be `placed atvany angle with the frame B, as speciferL In testimonythat I claim the foregoing@i have hereunio set my hand, t'liis 11th dayof February; 1868.

LEVI HERMAN UE

